Galaxy S21 Ultra 5G • Unlocked vs Galaxy S23 Ultra • Unlocked

The Samsung Galaxy S21 Ultra 5G, released in January 2021, and the Samsung Galaxy S23 Ultra, launched in February 2023, represent two generations of Samsung's top-tier smartphone offerings. While both devices aim to deliver a premium Android experience, the S23 Ultra introduces advancements in camera technology, processing power, and display brightness. Both run on the Android operating system, with the S23 Ultra benefiting from a more recent software foundation and extended update commitment.

When considering the practical lifespan of these devices, several factors come into play, including their release timelines, software support, and physical durability.

• Release Timeline and Age: The Galaxy S21 Ultra 5G was introduced in January 2021, making it approximately two years older than the Galaxy S23 Ultra, which debuted in February 2023. This age difference directly impacts their remaining software support.
• OS Support Duration: The Galaxy S21 Ultra 5G launched with Android 11 and is expected to receive up to four major Android OS updates, likely concluding with Android 15. In contrast, the Galaxy S23 Ultra shipped with Android 13 and is promised four generations of OS upgrades, extending its support to Android 17, along with five years of security updates, with support ending around 2028. This means the S23 Ultra offers a significantly longer period of official software support.
• Repairability: The Galaxy S23 Ultra has shown improvements in repairability compared to its predecessors, with some teardowns noting easier battery replacement due to design changes, though it still received a repairability score of 4 out of 10 from iFixit. Information on the S21 Ultra's specific repairability score is less prominent, but generally, newer models often incorporate lessons learned in design for serviceability.

The performance of a smartphone is crucial for daily tasks, from navigating applications to engaging in demanding activities like gaming. Both devices offer robust performance for their respective generations.

• Processor Capabilities: The Galaxy S21 Ultra 5G is powered by a processor that handles everyday applications and multitasking efficiently, providing a smooth user experience for its generation. The Galaxy S23 Ultra features a more advanced processor, specifically optimized for Galaxy devices, which translates to noticeably faster app loading, smoother multitasking, and enhanced performance in graphically intensive games. This newer processor also contributes to improved power efficiency.
• Storage and RAM: Both models offer various storage configurations, with the S23 Ultra introducing faster storage technology (UFS 4.0) in its higher-capacity variants, which can lead to quicker data access and app launch times. While both can be configured with ample RAM, the S23 Ultra's overall system responsiveness benefits from the synergy between its newer processor and faster memory components.
• Battery Behavior: Both devices are equipped with a 5000 mAh battery. However, due to the S23 Ultra's more efficient processor and optimized components, users generally report a longer battery life, often extending through a full day of heavy use and beyond, compared to the S21 Ultra. The S23 Ultra also supports faster wired charging at 45W, whereas the S21 Ultra supports up to 25W.

The display is a primary interface for smartphone interaction, and both the S21 Ultra 5G and S23 Ultra offer high-quality viewing experiences.

• Display Technology and Resolution: Both smartphones feature a 6.8-inch Dynamic AMOLED 2X display with a Quad HD+ resolution, providing sharp and detailed visuals. This technology delivers deep blacks and vibrant colors, enhancing media consumption and general usage.
• Brightness Levels: The Galaxy S21 Ultra 5G offers a peak brightness of 1500 nits, ensuring good visibility in various lighting conditions. The Galaxy S23 Ultra elevates this with a peak brightness of 1750 nits, improving outdoor visibility and HDR content viewing. Some reports even suggested the S23 Ultra could reach up to 2200 nits in specific scenarios.
• Refresh Rate and Smoothness: Both devices feature an adaptive refresh rate of up to 120Hz, which dynamically adjusts based on content to provide smooth scrolling and animations while conserving battery life. The S23 Ultra's display can scale down to 1Hz, offering potentially greater power efficiency for static content compared to the S21 Ultra's 10Hz minimum.

Both the Galaxy S21 Ultra 5G and S23 Ultra are designed with advanced camera systems, but the newer model brings significant enhancements.

• Main Camera System: The Galaxy S21 Ultra 5G features a 108-megapixel main sensor, alongside a 12-megapixel ultrawide and two 10-megapixel telephoto lenses offering 3x and 10x optical zoom. The Galaxy S23 Ultra significantly upgrades the main sensor to 200-megapixels, which allows for greater detail capture and improved flexibility in cropping. It retains a 12-megapixel ultrawide and two 10-megapixel telephoto lenses (3x and 10x optical zoom), similar to its predecessor.
• Low-Light and Video Performance: The S23 Ultra shows notable improvements in low-light photography, often referred to as 'Nightography,' producing brighter and more detailed images in challenging conditions. Video recording quality is excellent on both, with the S23 Ultra offering enhanced stabilization and more advanced video features, including improved dynamic range in low-light video.
• Front Camera and Audio: The S21 Ultra 5G includes a 40-megapixel front camera. The S23 Ultra features a 12-megapixel front camera, which, despite the lower megapixel count, often delivers improved image processing and better low-light performance for selfies. Both devices offer stereo speakers for an immersive media consumption experience and good microphone quality for calls and recordings.